Art of dental prosthetics



Jime 29 1926.

r 1,590,963 C. l. STOLQFF ART OF DENTAL PROSTHETICS Fi led Jan. 12. 1924 w-Q K 9 L Fla Fig.2. \J

WITNESSES INVENTOR WWW. BY

' mf' ATTOIRNEY Patented June 29, 1926. 2

UNITED STATES CHARLES I. STOLOFF,

OF NEW YORK, N. Y.

ART OF DENTAL PROSTHETICS.

Application filed January 12, 1924. .Serial No. 685,823.,

My invention relates to new and useful improvements in artificial plate and bridge dentures, and more particularly to a new type of attachment construction therefor.

It has been the primary purpose of the in vention to provide a locking hinge attachment, whereby there has been effected a multi-sectioned plate denture formation, i. e., an arrangement formed of a main plate and one or more auxiliary plate denture sections, each section being joined to the main plate denture through the medium of this attachment. In plate denture work, in the case of metallic and rubber plates, where it is the aim to provide as much retentional contact between the plate and gum as possible, it often necessitates cutting down gum protuberances and under-cuts, or, on the other hand, causing the user inconvenience and pain when removing from or replacing the plate in the mouth. However, by the provision of this sectional plate arrangement, these very gum protuberances and under-cuts can be adapted, in.cooperation with the auxiliary sections of the plate, to be used as additional retaining and supporting means against unintentional dislodgement of the plate from the mouth, without resulting in the incon venience and pain when removing or replacing the plate. Furthermore, it is particularly intended that the gripping area of this multi-sectioned plate be extended, so that the mylohoid ridge can be utilized as a cooperating local for positioning auxiliary plate sections. Another object of this invention has been to provide a locking means for the hinge attachment that is positive in its operation, readily accessible, and forming with the hinge membera compact arrangement.

With the preceding and further objectsand advantages obvious and manifested hereinafter, the invention consists of the novel features, the application and arrangement of the parts more specifically de- --scribed in the specification following, and

illustrated in the accompanying drawing.

A preferred. and practical embodiment of myinvention is shown in the accompanying ,drawing, in which like reference characters indicate the corresponding parts, throughout the different views.

ng-the accompanying drawing F gure- 1 1S a perspecfii e' i w ef eaeh.

,-part ei this attachment, .callectivelyj rouued f li emllfiefifiie g thetenter of the attachment, showing a fragmentary view of the rubber plate sect-ions. I

Fig. 3 is an elevation of a half section of jaw with a fragmentary elevation of a rubber plate, showing the attachment 'in'position.

The attachment forming the substance of this invention consists of a locking hinge arrangement, a simpleform being shown in the various views of the drawing. Here, referring particularly to Figures 1 and 2, the main hinging elements of the attachment are indicated by the parts 1 and 2. Arbitrarily, the hinge element 1 is shown of H form, and the hinge element 2 of inverted T form. Through the lower pair of uprights of the element 1 are positioned, laterally, aligning bearing holes 3, and through the upright leg of the element 2 is positioned, correspondingly, a similar bearing hole 3', so that, when the leg of the element 2 is interposed between the lower set of uprights of the element 1 and a shaft pin 4 made to journal within the three bearing holes 3, a hinging connection will exist'between the elements landv 2. I l t On thelocking element 5 is formed, midway laterally and on line with the top edge, a linking arm 6 to be interposed between the upper uprights'of the hinging element 1, referring to Figures 1- and 2. Also, there are positioned aligningbearing holes 7 one through each of the upper uprights, lateral- 'ly,'of the element 1, and a corresponding one through the linking. arm6, so that, when p a shaft pin 4 similar to the one mentioned 7 before, is made to journal through'this set of bearing holes 7, a hinging connection will likewise exist between the hinging element 1 and the locking element'5,

On the locking element 5 is also formed, midway laterally near the lower edge, an

' extending pin knob 8, to engage within a cooperatively positioned receptacle 9,'i. e., a through hole in the body of thehinging element '2, reference being had to Figures 1 and 2. Thus, when the-locking-element-'5 is swivelled so that the knob 8 isforc'ed into its receptacle 9, the hinging'ielements 1 5nd 7 2 will be held in rigid relationship, i."e., they "will b unable to swivel.

i stan e ffruh 1 .1 L i on the:

A me h d f appl ca ion-dim pr cipl of the plate 10' being assumed to extend downward to meet the mylohoid ridge 12. The auxiliary rubber plate section 13 would then be formed, closely hugging the surface of the mylohoid ridge, to extend completely thereabout. The length of upper edge of the auxiliary plate 13, and that length of .lower edge of the main plate 10 abutting it,

would be formed to make a close fitting joint.

In Fig. 3, 1 illustrate one manner of mounting the attachment, showing its application as the joining medium for the main plate 10 and auxiliary plate 13. In this case the hinging element 1 of the attachment, is embedded in the auxiliary plate section 13, preferably during the vulcanization of the auxiliary plate, proximately to that edge whichis to butt against the main plate, and centrallyof the width of the auxiliar 7 late. Similarl the hin in C) out in a manner well known to those skilled in the art and technique of this branch of dentistry. 1

Although I have'shown in Fig. 8, the attachment mounted on the plate with the hinging element 1 permanently seated on the auxiliary plate 13, and the hinging element 2 permanently seated on the main plate 10, the reverse of this order of mounting the elements of the attachment may in some instances be preferable, this latter manner of mounting the hinging elements being illustrated in Fig. 2. 'lVhat should decide the order of mounting is the space available for manipulating the locking element 5 with the finger, which in turn would depend on the particular location of the auxiliary plate section 13. i

To seat the plate arrangement in the mouth, it would be simply necessary to disengage the locking element so that the knob extension Sis free of its receptacle 9, insert the plate in the mouth in the ordinary manner, then with the finger snap the locking element against the hinging element 2, forcing the knob extension 8 into its receptacle 9. The hinging elements 1 and 2 now held in fixed relationship to each other, will cause a rigid relationship to exist between the auxiliary plate 13 and the main plate 10,

i. e., as ifthe main and auxiliary plates were of solid section. To remove the plate arrangement from the mouth, the locking element 5 is slightly lifted with the finger, disengaging the knob extension from its receptacle, and the plate will be readily removable.

In the accompanying drawing I have illustrated my principle of plate construction, in a case showing but a single auxiliary plate section 13. This has been done for simplicity, the proper number of auxiliary plate sections to be employed with a main plate being generally more than one, the decision being governed by the conditions existing in the mouth of the patient.

This principle of plate construction, I particularly wish to set forth, can be very readily a iplie-fl to ordinary plates already 0, tent and in use inthe mouth. It would only be necessary to vulcanize a proper form oi auxiliary plate section, and join it to the a eady existing plate through the medium oi the attachn'ient. Also, this principle of plate construction just'as readily adapte to all types of metallic plate work, such gold plates and the like, the auxiliary plate sections being joined to the main plate l ough the medium of the attachment, the

hinging elements of the attachment being n'iou (soldered preferably) onto the respective metallic plate sections, in a similar manner'as described and illustrated in the foregoing.

, It is obvious, that this invention, a practical embodiment of which has been. hereinbeforc de. ibed and illustrated, isnot necessarily limited to the character of denture specifically set forth in the foregoing, but

can be modified to be applicable to different types and classes of artificial dentures; and is moreover not limited to those details of construction which have been more particularly described, changes thereof'beingreadi ly resorted to, within scope and spirit of the appended claims.

ll hat I claim is:

1.. A multi-sectional denture formation comprising an artificial main plate denture section and an artificial auxiliary plate denture section movably joined thereto, the adjoining walls of the main and auxiliary plate sections being arranged in abutting relation.

2. A multi-sectional denture formation COllIPIlSiILg a main plat-e denture section formation comprising a main plate denture.

section and an auxiliary plate denture section, the adjoining walls of the main and auxiliary plate sections being arranged in abutting relation, and a connecting structure joining the auxiliary plate section to the main plate section for movement relatively to the latter.

4. A multi-sectional denture formation comprising an artificial main plate denture section and an artificial auxiliary plate denture section, and a connecting structure joining the auxiliary plate section to the main plate section for movement relatively to the latter, the said connecting structure including means for locking the sections together in fixed position.

A multi-sectional denture formation comprising an artificial main plate denture section adapted to seat on the jaw, an artificial auxiliary terminal plate section adapted to seat in the retro-alveolar region, and a connecting structure joining the terminal plate section to the main plate section for movement relatively thereto for facilitating lodgement of the denture formation Within and dislodgement of the same from the mouth, the adjoining Walls of the main and auxiliary plate sections being arranged in abutting relation.

6. A multi-sectional denture formation comprising a main plate denture section adapted to seat on the jaw, an auxiliary terminal plate section adapted to seat in the retro-alveolar region, and a connecting structure joining the terminal plate'section to the main plate section for movement relatively thereto for facilitating lodgement of the dentureformation within and dislodgement of the same from the mouth, the said connecting structure including means for locking the sections together in fixed position. 3 f i 1 7. A multi-sectional denture formatio comprising an artificial main plate denture section and an artificial auxiliary plate denture section, the adjoining Walls of the main and auxiliary plate sections being arranged in abutting close fitting relation, and a hinge structure pivotally joining the auxiliary section to the main plate section.

8. A joining structure for artificial dentures of the character described, comprising a hinging element adapted to be permanently mounted on a main plate section, a second hinging element adapted to be permanently mounted on an auxiliary plate denture, a locking element hingedly mounted upon one of the said hinging elements, the said locking elements having formed thereon an ex tending pin knob adapted to engage Within a corresponding receptacle co-operatively positioned on the other of said hinging elements, and a shaft pin for joining the afore-.

mentioned respective hinging and locking elements.

9. A joining structure for artificial dentures of the character described, comprising a'hinging element adapted to be permanently mounted on a main plate denture, a second and complemental hinging element adapted to be permanently mounted on an auxiliary plate denture, and a locking element hingedly mounted upon one of the said hinging elements and having locking means for engaging the other of the hinging elements.

CHARLES I. STOLOFF, D. D. S. 

